The expert as expert, a bookish sort consulting what is already known, cannot by his nature learn anything new, because then he wouldn’t be an expert. He would be an entrepreneur, a statesman, or an artist. The expert critic can make these non-expert entrepreneurs more wise, perhaps, by telling them about the past. But he must settle for low wages. Smartness of the experts sort cannot proceed to riches.
Deidre McCloskey’s ‘If You’re So Smart: The Narrative of Economic Expertise’ 1990.